It is said that Napoli have approached Porto again in the past few hours and that the Italians are trying to reach a swift settlement, but Porto’s imminent sale of Brahimi to Zenit St Petersburg could raise Herrera’s price tag.

It is claimed that if either club want to sign the Mexico international Herrera then they would have to pay out £25-26million.

It is claimed by the Daily Mail that Napoli have also made enquiries for the young midfielder and that the two clubs are continuing to compete with each other in regards to transfers this summer.

Both clubs are reportedly prioritizing midfielders during this window and it could be a long summer for the two sides as they look to battle against each other in an effort to secure the signings of their targets.